Breadcrumb Home > Dictionary > Index C coal ball: Meaning and Definition of Find definitions for: coal' ball" Pronunciation: [key] a spherical mass of mineral and plant material embedded in coal beds, ranging in size from that of a pea to that of a boulder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coala coalbin TrendingHere are the facts and trivia that people are buzzing about. Biographies: Notable Jewish Religious Leaders Current Events This Week: September 2023 Hispanic Population and the 2010 U.S. Census 50 Spookiest Halloween Quotes Preamble of the United Nations Charter The Jewish Calendar ✖ Related Content Daily Word Quiz: quincunx Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language